a-a a-b a-i a-z aaa aab aai aam aaz ab- aba abb abi abm abz ai- aia aib aii aim aiz ama amb ami amm amz az- aza azb azi azm azz baa bab bai bam baz bba bbb bbi bbm bi- bia bib bii bim biz bma bmb bmi bmm bmz bza bzz ia- iaa iab iai iam iaz iba ibb ibi ibm ibz iia iib iii iim im- ima imb imi imm imz iza izi izm izz maa mab mai mam maz mba mbb mbi mbm mi- mia mib mii mim miz mma mmb mmi mmm mmz mza mzb mzi mzm zaa zab zai zam zaz zbb zbm zia zib zim ziz zma zmb zmm zzz